This case involves a number of individuals who recently passed away from lung cancer, or have been diagnosed with the same, after working for a major railroad operator for an extended period of time. All of the men involved in the suit were employed as engineers by the railroad for a number of years, and worked with and were exposed to asbestos. It was unknown, however, how much asbestos the men were exposed to over time, requiring an expert assessment of the severity of their likely exposure.